-4[-4-5]=-5+21d

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Solution for -4[-4-5]=-5+21d equation:


Simplifying
-4[-4 + -5] = -5 + 21d

Combine like terms: -4 + -5 = -9
-4[-9] = -5 + 21d

Multiply -4 * -9
36 = -5 + 21d

Solving
36 = -5 + 21d

Solving for variable 'd'.

Move all terms containing d to the left, all other terms to the right.

Add '-21d' to each side of the equation.
36 + -21d = -5 + 21d + -21d

Combine like terms: 21d + -21d = 0
36 + -21d = -5 + 0
36 + -21d = -5

Add '-36' to each side of the equation.
36 + -36 + -21d = -5 + -36

Combine like terms: 36 + -36 = 0
0 + -21d = -5 + -36
-21d = -5 + -36

Combine like terms: -5 + -36 = -41
-21d = -41

Divide each side by '-21'.
d = 1.952380952

Simplifying
d = 1.952380952

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